Best thing would be to (this would be farrrrrrr easier on linux btw :(( ) run a small web/ftp server on the same machine and when the png is generated, automatically convert it to a fairly low (like 50% quality) jpeg and move it to the webserver. A jpeg will be a bit mooshy but it's a fair compromise between detail and size.
Fair bit of work there, obviously so maybe just do it once a week or so by hand.
Yeah, I was thinking down that route but to it would probably make more sense if someone else could host it (either at home or on some hosting) so I only have to upload it once, as like I say bandwidth is stretched to fuck as it is :|
Probably don't even need to go that far - I suspect a 75% JPEG would balance filesize/quality acceptably.
I wonder if doing a 8-bit PNG with only 64 colours might even give a good balance - just tried it on the above image and it comes out at 103KB (i.e. 40% filesize of the JPG).
There are PNG optimising utilities that can probably do that in a scripted way.
btw, I've just created mine.tehforum.co.uk which points at the IP address in the first post, meaning it's easier for people to remember if they play on multiple servers.
May take a while for DNS to propagate though (no idea how quickly it's done these days).
(And obviously if the IP changes let me know and I can update it.)
It doesn't have FTP and it really shouldn't have. It does have SSH server so you can SCP files to it. And should you want a GUI for SCP, I highly recommend the lovely WinSCP.
I assume he's got pinging turned off or something since I get no response, but either way, I just tried pinging mine.tehforum.co.uk and it resolved to 94.173.2.75 so it's done here by the looks of it. (BeThere)